/// <summary>
/// Returns first document of resultset or null if resultset are empty
/// </summary>
public Task <T> FirstOrDefaultAsync()
{
var tcs = new TaskCompletionSource <T>();
_liteDatabaseAsync.Enqueue(tcs, () => {
tcs.SetResult(_wrappedQuery.FirstOrDefault());
});
return(tcs.Task);
}
/// <summary>
/// Returns first document of resultset or null if resultset are empty
/// </summary>
public Task <T> FirstOrDefaultAsync()
{
return(_liteDatabaseAsync.EnqueueAsync(
() => _wrappedQuery.FirstOrDefault()));
}